Systematic Development of Phytophthora Species-Specific Mitochondrial Diagnostic Markers for Economically Important Members of the Genus.
Identifieur interne : 000916 ( Main/Exploration ); précédent : 000915; suivant : 000917Systematic Development of Phytophthora Species-Specific Mitochondrial Diagnostic Markers for Economically Important Members of the Genus.
Auteurs : Timothy D. Miles [États-Unis] ; Frank N. Martin [États-Unis] ; Gregg P. Robideau [Canada] ; Guillaume J. Bilodeau [Canada] ; Michael D. CoffeySource :
- Plant disease [ 0191-2917 ] ; 2017.
Abstract
The genus Phytophthora contains many invasive species to the U.S.A. that have the potential to cause significant damage to agriculture and native ecosystems. A genus and species-specific diagnostic assay was previously reported based on mitochondrial gene order differences that allowed for the systematic development of 14 species-specific TaqMan probes for pathogen detection ( Bilodeau et al. 2014 ). In this study, an additional 32 species-specific TaqMan probes for detection of primarily invasive species have been validated against 145 Phytophthora taxa as well as a range of Pythium and plant DNA samples. All validated probes were found to be species-specific and could be multiplexed with a genus-specific probe. The lower limit of linear detection using purified genomic DNA ranged from 1 to 100 fg in all assays. In addition, 124 unique TaqMan probes for Phytophthora spp. developed in silico are presented, which, if testing confirms they are species-specific, will provide diagnostic capabilities for approximately 89% of the genus. To enhance sensitivity of detection for several species that contained a single nucleotide polymorphism (SNP) in the reverse primer, a second primer was developed that is added in a small amount to the master mix. Furthermore, a PCR-RFLP system was developed that could be used to identify individual species when multiple species are present in a sample, without requiring cloning or sequencing. Several experiments were also conducted to compare various qPCR thermal cyclers and independent validation experiments with another research laboratory to identify possible limitations when the assays are used on a range of equipment in different labs. This system represents a comprehensive, hierarchal approach to increase the detection capability and provide tools to help prevent the introduction of invasive Phytophthora species.
DOI: 10.1094/PDIS-09-16-1224-RE
PubMed: 30682972
Affiliations:
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Bilodeau</name><affiliation wicri:level="3"><nlm:affiliation>Canadian Food Inspection Agency (CFIA), Ottawa, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Canadian Food Inspection Agency (CFIA), Ottawa</wicri:regionArea><placeName><settlement type="city">Ottawa</settlement><region type="state">Ontario</region></placeName></affiliation></author><author><name sortKey="Coffey, Michael D" sort="Coffey, Michael D" uniqKey="Coffey M" first="Michael D" last="Coffey">Michael D. Coffey</name><affiliation><nlm:affiliation>Department of Plant Pathology and Microbiology, University of California, Riverside.</nlm:affiliation><wicri:noCountry code="subField">Riverside</wicri:noCountry></affiliation></author></analytic><series><title level="j">Plant disease</title><idno type="ISSN">0191-2917</idno><imprint><date when="2017" type="published">2017</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The genus Phytophthora contains many invasive species to the U.S.A. that have the potential to cause significant damage to agriculture and native ecosystems. A genus and species-specific diagnostic assay was previously reported based on mitochondrial gene order differences that allowed for the systematic development of 14 species-specific TaqMan probes for pathogen detection ( Bilodeau et al. 2014 ). In this study, an additional 32 species-specific TaqMan probes for detection of primarily invasive species have been validated against 145 Phytophthora taxa as well as a range of Pythium and plant DNA samples. All validated probes were found to be species-specific and could be multiplexed with a genus-specific probe. The lower limit of linear detection using purified genomic DNA ranged from 1 to 100 fg in all assays. In addition, 124 unique TaqMan probes for Phytophthora spp. developed in silico are presented, which, if testing confirms they are species-specific, will provide diagnostic capabilities for approximately 89% of the genus. To enhance sensitivity of detection for several species that contained a single nucleotide polymorphism (SNP) in the reverse primer, a second primer was developed that is added in a small amount to the master mix. Furthermore, a PCR-RFLP system was developed that could be used to identify individual species when multiple species are present in a sample, without requiring cloning or sequencing. Several experiments were also conducted to compare various qPCR thermal cyclers and independent validation experiments with another research laboratory to identify possible limitations when the assays are used on a range of equipment in different labs. This system represents a comprehensive, hierarchal approach to increase the detection capability and provide tools to help prevent the introduction of invasive Phytophthora species.</div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">30682972</PMID><DateRevised><Year>2019</Year><Month>11</Month><Day>20</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Print">0191-2917</ISSN><JournalIssue CitedMedium="Print"><Volume>101</Volume><Issue>7</Issue><PubDate><Year>2017</Year><Month>Jul</Month></PubDate></JournalIssue><Title>Plant disease</Title><ISOAbbreviation>Plant Dis</ISOAbbreviation></Journal><ArticleTitle>Systematic Development of Phytophthora Species-Specific Mitochondrial Diagnostic Markers for Economically Important Members of the Genus.</ArticleTitle><Pagination><MedlinePgn>1162-1170</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1094/PDIS-09-16-1224-RE</ELocationID><Abstract><AbstractText>The genus Phytophthora contains many invasive species to the U.S.A. that have the potential to cause significant damage to agriculture and native ecosystems. A genus and species-specific diagnostic assay was previously reported based on mitochondrial gene order differences that allowed for the systematic development of 14 species-specific TaqMan probes for pathogen detection ( Bilodeau et al. 2014 ). In this study, an additional 32 species-specific TaqMan probes for detection of primarily invasive species have been validated against 145 Phytophthora taxa as well as a range of Pythium and plant DNA samples. All validated probes were found to be species-specific and could be multiplexed with a genus-specific probe. The lower limit of linear detection using purified genomic DNA ranged from 1 to 100 fg in all assays. In addition, 124 unique TaqMan probes for Phytophthora spp. developed in silico are presented, which, if testing confirms they are species-specific, will provide diagnostic capabilities for approximately 89% of the genus. To enhance sensitivity of detection for several species that contained a single nucleotide polymorphism (SNP) in the reverse primer, a second primer was developed that is added in a small amount to the master mix. Furthermore, a PCR-RFLP system was developed that could be used to identify individual species when multiple species are present in a sample, without requiring cloning or sequencing. Several experiments were also conducted to compare various qPCR thermal cyclers and independent validation experiments with another research laboratory to identify possible limitations when the assays are used on a range of equipment in different labs. This system represents a comprehensive, hierarchal approach to increase the detection capability and provide tools to help prevent the introduction of invasive Phytophthora species.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Miles</LastName><ForeName>Timothy D</ForeName><Initials>TD</Initials><AffiliationInfo><Affiliation>School of Natural Sciences, California State University Monterey Bay, Seaside, CA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Martin</LastName><ForeName>Frank N</ForeName><Initials>FN</Initials><AffiliationInfo><Affiliation>Crop Improvement and Protection Research Unit, USDA-ARS, Salinas, CA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Robideau</LastName><ForeName>Gregg P</ForeName><Initials>GP</Initials><AffiliationInfo><Affiliation>Canadian Food Inspection Agency (CFIA), Ottawa, Canada.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Bilodeau</LastName><ForeName>Guillaume J</ForeName><Initials>GJ</Initials><AffiliationInfo><Affiliation>Canadian Food Inspection Agency (CFIA), Ottawa, Canada.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Coffey</LastName><ForeName>Michael D</ForeName><Initials>MD</Initials><AffiliationInfo><Affiliation>Department of Plant Pathology and Microbiology, University of California, Riverside.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2017</Year><Month>04</Month><Day>19</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Plant Dis</MedlineTA><NlmUniqueID>9882809</NlmUniqueID><ISSNLinking>0191-2917</ISSNLinking></MedlineJournalInfo></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2019</Year><Month>1</Month><Day>27</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2017</Year><Month>7</Month><Day>1</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2017</Year><Month>7</Month><Day>1</Day><Hour>0</Hour><Minute>1</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">30682972</ArticleId><ArticleId IdType="doi">10.1094/PDIS-09-16-1224-RE</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Canada</li><li>États-Unis</li></country><region><li>Californie</li><li>Ontario</li></region><settlement><li>Ottawa</li></settlement></list><tree><noCountry><name sortKey="Coffey, Michael D" sort="Coffey, Michael D" uniqKey="Coffey M" first="Michael D" last="Coffey">Michael D. 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